From 5c95b6568201a6b9e0043ad838892599ab0e0d90 Mon Sep 17 00:00:00 2001 From: Raghavendra G Date: Thu, 9 Jul 2009 00:28:34 +0000 Subject: quick-read: implement qr_ftruncate. Signed-off-by: Anand V. Avati --- xlators/performance/quick-read/src/quick-read.c | 142 ++++++++++++++++++++++++ 1 file changed, 142 insertions(+) (limited to 'xlators/performance/quick-read') diff --git a/xlators/performance/quick-read/src/quick-read.c b/xlators/performance/quick-read/src/quick-read.c index 0e3095e5f..632687c0a 100644 --- a/xlators/performance/quick-read/src/quick-read.c +++ b/xlators/performance/quick-read/src/quick-read.c @@ -1838,6 +1838,147 @@ out: } +int32_t +qr_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct stat *buf) +{ + int32_t ret = 0; + uint64_t value = 0; + qr_file_t *qr_file = NULL; + qr_local_t *local = NULL; + + if (op_ret == -1) { + goto out; + } + + local = frame->local; + if ((local == NULL) || (local->fd == NULL) + || (local->fd->inode == NULL)) { + op_ret = -1; + op_errno = EINVAL; + goto out; + } + + ret = inode_ctx_get (local->fd->inode, this, &value); + if (ret == 0) { + qr_file = (qr_file_t *)(long) value; + + if (qr_file) { + LOCK (&qr_file->lock); + { + if (qr_file->stbuf.st_size != buf->st_size) { + dict_unref (qr_file->xattr); + qr_file->xattr = NULL; + } + } + UNLOCK (&qr_file->lock); + } + } + +out: + STACK_UNWIND (frame, op_ret, op_errno, buf); + return 0; +} + + +int32_t +qr_ftruncate_helper (call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset) +{ + STACK_WIND (frame, qr_ftruncate_cbk, FIRST_CHILD(this), + FIRST_CHILD(this)->fops->ftruncate, fd, offset); + return 0; +} + + +int32_t +qr_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset) +{ + int flags = 0; + uint64_t value = 0; + call_stub_t *stub = NULL; + char *path = NULL; + loc_t loc = {0, }; + qr_local_t *local = NULL; + qr_fd_ctx_t *qr_fd_ctx = NULL; + int32_t ret = -1, op_ret = -1, op_errno = -1; + char need_open = 0, can_wind = 0, need_unwind = 0; + + ret = fd_ctx_get (fd, this, &value); + if (ret == 0) { + qr_fd_ctx = (qr_fd_ctx_t *)(long)value; + } + + local = CALLOC (1, sizeof (*local)); + if (local == NULL) { + op_ret = -1; + op_errno = ENOMEM; + need_unwind = 1; + goto out; + } + + local->fd = fd; + frame->local = local; + + if (qr_fd_ctx) { + LOCK (&qr_fd_ctx->lock); + { + path = qr_fd_ctx->path; + flags = qr_fd_ctx->flags; + + if (!(qr_fd_ctx->opened + || qr_fd_ctx->open_in_transit)) { + need_open = 1; + qr_fd_ctx->open_in_transit = 1; + } + + if (qr_fd_ctx->opened) { + can_wind = 1; + } else { + stub = fop_ftruncate_stub (frame, + qr_ftruncate_helper, + fd, offset); + if (stub == NULL) { + op_ret = -1; + op_errno = ENOMEM; + need_unwind = 1; + qr_fd_ctx->open_in_transit = 0; + goto unlock; + } + + list_add_tail (&stub->list, + &qr_fd_ctx->waiting_ops); + } + } + unlock: + UNLOCK (&qr_fd_ctx->lock); + } else { + can_wind = 1; + } + +out: + if (need_unwind) { + STACK_UNWIND (frame, op_ret, op_errno, NULL); + } else if (can_wind) { + STACK_WIND (frame, qr_ftruncate_cbk, FIRST_CHILD(this), + FIRST_CHILD(this)->fops->ftruncate, fd, offset); + } else if (need_open) { + op_ret = qr_loc_fill (&loc, fd->inode, path); + if (op_ret == -1) { + qr_resume_pending_ops (qr_fd_ctx); + goto out; + } + + STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this), + FIRST_CHILD(this)->fops->open, &loc, flags, fd); + + qr_loc_wipe (&loc); + } + + return 0; +} + + int32_t init (xlator_t *this) { @@ -1923,6 +2064,7 @@ struct xlator_fops fops = { .fentrylk = qr_fentrylk, .finodelk = qr_finodelk, .fsync = qr_fsync, + .ftruncate = qr_ftruncate, }; -- cgit